Wood-preserving system



May 17, 1927. y

J. R.,PFISTER WOOD PRESERVING SYSTEM Filed Dec. 17, 1926 @ma www Patented May 17, 1927. i

UNITED STATES JOHN RUDOLF PFISTER, OF NEW YORK,

N. Y., AssIeNoR or FIVE ran CENT 'ro PATNT 1 t l.

IRvING RAUYMAN lAND 4Ni'NE'rEEN EER GENT lro ERNEST BRENNER, lno'I'H or` NEW YoRx, N. Y., AND 'riIIR'rEEN PER cEN'r To MEYER-RosxEY, IRA L BENJAMIN MARVIN, AND MaURIcE E. SERIJING', coran'rNERs, PRacrIcINe Law UNDER THE FIRM NAME 0E BosxEY, MILLER-'MARVIN Nn SERLING,: orNEw Yoan, N. Y.

WOOD-PBESERVING SYSTEM.

Application ltil-cd December 17, 1926. Serial No. 155,377.

This invention relates-to wood preserving systems with particular reference to theprocess thereof and apparatus therefor.

Heretofore such systems have been found lacking and wholly inadequate. for several logical reasons.

Probably the oldest of these systems is impregnating by dipping. Obviously, this is a long drawn out method requiring elaborate vats and incurring tremendous expense. ln addition, it is found that the material used in the process does not penetrate very deeply.

into the wood so that the effect is not lasting and furthermore, this operation can not'be performed Awithout interfering with the function of the article to be impregnated,

such for instance as telegraph poles, mine substances are forced. Howeverfasidefrom harming the wood fibres, this process, like its f preserved.

predecessor, is expensive because of the time .requiredin drilling the openings.

The last systemwas the Cobra system, in

which a hollow, tubular needle is inserted into the wood through which preserving fluid is forced. i

Devices of such character readilt clog and as a result, it has often occurred` ata co'nsiderable' p'art of .a pole or pillar, thou li having been treated, will receive no bene t,' since it is not possible to detect such clog` ging. Another disadvantage of this method is the ncapability thereofA to Ameasure the amount of impregnating material bein linjected into the wood, the objectionsfto w ich are obvious. j j

.It is therefore'one ofthe objects of the present invention to overcome the above disadvantages by providing a light, handy device capable of operation without interfering .with the functions of" the subject to be paratus which may be utilized without in- ]urius effect upon the wood whether in fresh or dry condition and which is a lasting method, operating without an elaborate outlay, thus materially reducing the cost of this important conservation method.

These and'other important objects, which will become apparent as the description progresses, are accomplished by the novel construction and arrangement of parts together with the processes as hereinafter dei scribed .and illustrated in the accompanying drawing, forming a lmaterial part of this disclosure, and in which Figure lis a general side elevational view f Figure 6 is a transverse sectional viewtaken on line 6-6`of Figure 4..

In the drawing, the numeral lrojeeting'outwardly from the easin'g'areV .pairs of 'lugs 13 carrying therebetween on" 'pintles 14 on whichY are pivoted arms 15 curved upwardly at.. their, outer ends fand providedwith inreachingrprongsl adapted to -etiage the log 17 or like Volf t to be trea these arms being y into operative engagement by springs, not shown, the container being further 'supported bv fingers 18 extending from and. integral with thesame'.

Fixed on the cover 11 is a'pair .of lugs 19 at the top 20 of'which is fulcrumed a lever 21, pivoted. at 22 to a piston rod 23 extending .in to the casing 10'containing any desired impregnatin'gluid (auch as ,tfarand ereosote oil, etc.) the piston rod connecting M j .1 with a, piston (not shown).v A further object is in the provision of ap- Extendi g downwardly frointlie bottoni of the contau'ierfis a stem24 to. AWhich is at-` tached, througlifa acking nut-2,5', a flexible tube 26, conn 'j ina-'stem 27 provided with a valve 28, the.stem,being fixed on the 'lll ` u I i nates a cylindrical container havingA a cover 7a' v11 above .which projects a setor atop screw top of a Substantially rectangular block 29 having an arcuate face 30 to conform substantially with the shape of circular objects` to be reserved. The face 30 is preferably provi ed with a rubber pad or facing to constitute an impervious joint and prevent loss of kthe impregnating fluid.

The block is provided with a vertical bore 31 leading downwardly from the stem 27 I vcaused by the abutting-,of the arcuate lower nto operative 43 at its lower end to abut the object to be.

operated on.

Projecting outwardlyl from the sides of the block 29 is a pair 'of curved gri s 44 engaging a chain 45 passin aroun the beam 17, the blockbeing posltively held. in

operative' position by tension of theA chain portion 46, of a lever 47 against the beam 17 the chain engaging a hook 48V formed on the arcuate section,46.

Part of the shank 34 Aand the edges ofthe attened.' ortion. 37 of the injector are provided wit oppositely disposed longitudlnal grooves 49. f i v In operation the container 10 is suspended from the beam 17by the arms 15 and the chain 45 tightened b the lever`47 hugging the injector head tig tly to the log, whereupon `the injector'is inserted into vthe beam between the fibres by pushing the lever 47 ositlon to press the chisel mto the wood bres. j

`Thus,. by actuating the pump lever 21 u and down, the fluid 1n the' container 10|wi pass through the tube 26 into the. bore-32 and hence into the object to -be treated throu h'the grooves 49, the 1i uid covering a territory indicated `by the Figurel.

This operation may be performed by superficial injection at spaced intervals so that `the entire object may be' covered thus protecting the beam, pole or tie from weather, insects, foreign growth etc.

From thev foregoing, it may seen that La: system' of impregnating woodhas beenV otted line in disclosed that is lasting, will not injure the object, interfere .with its function even when,-V

in use, and is carried out by the .use ofa simple, light and handy apparatus.

" Although I havedescribed my improvements with considerable detail, I do not desire to be limited to such details since many changes and modifications may well be made without departing from the spirit and scope of the invention as recited.

I claim: v

1. An apparatus for impregnatin wood comprising a pump, means on sai pump forattaching the same to an object to be impregnated,an injector, a connection between said pump and injector, and means to 'insert said injector intermediate the fibres of the object to be treated.

2. An apparatus for impregnating wood comprising a pump, means on said pump for attaching thesame to an object to be im.

I`pregnated, means adjustable on said pum to limit the stroke thereof, a block, a flexib e connection .between said` block and -said pump, and means in said block to inject the contents of said pump into an object to be treated. ,l

3. An apparatus for impregnating wood comprising a pump, means pivoted on ysaid pump for sus n screw on sai pumpto limit the stroke thereof, a block,a iiexible tube intermediate said pump and block, and a ved chiselvlike injector slidable in said-b ook.

4. An apparatus for impregnating wood attaching ,the same to an object to be impregnated, means adjustable on said pump to limit the stroke thereof, a block, a'tubular connection between saiddpump and block,

block, 'said inved,

an injector slidable in sai jector includin a longitudinally chisel-like shan and "a crospieee ,xed on ding the same, a stop set` comprising a pump, means on said pump for the larger end of the shank, and meansre- 'y movably secured on said block to insert' said injector intothe object tube 5. An/apparatus f or impregnatin wood comprising'a pump, a rectangular b ook, a' tube connecting said pum injector in 'said blockj an means on said block to secure said 'injector 'intermediate the. fibres of the object to be treated.

Signed at New York city, in the county ws and bloekhan f of New York,-and State of New Yorkthis l 15th day of December, A. D. 1926.

JHN Runomj` iurrs'rian.A 

